25/08/2026
Summer heat is the silent killer of car batteries, but winter is where the breakdown happens. While cold mornings get all the blame for dead batteries, the real damage occurs during the hottest months of the year.
What heat actually does to a battery:
Accelerates internal grid corrosion: High under-bonnet temperatures dramatically speed up chemical reaction rates and internal wear.
Causes fluid loss & sulfation: Excessive heat evaporates electrolyte fluids and degrades the internal lead plates.
Increases self discharge: High ambient heat causes batteries to drain significantly faster, even while parked.
A battery degraded by high summer temperatures may limp through autumn unnoticed. But as soon as the first freeze lands, two things collide:
Cold temperatures can cut available battery capacity and Cold Cranking Amps (CCA) by up to 30–50%.
Cold, thick engine oil requires up to double the cranking power to turn over the engine.
The result? A massive surge in sudden winter battery failures.
Charge In Motion with Hankook Batteries
Now is the time for workshops and motor factors to prepare for the inevitable winter demand. Engineered for durability, high vibration resistance, and optimal cranking power, the Hankook range (including advanced SMF, EFB, and AGM technologies) provides the reliability modern vehicles demand.
The full range of Hankook Batteries is in stock and available now from Somora Motor Parts.
Get ahead of the winter rush, and ensure your shelves are stocked with power motorists can depend on.
